Support for HandBrake on Linux, Solaris, and other Unix-like platforms
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An Activity Log is required for support requests. Please read How-to get an activity log? for details on how and why this should be provided.
My guess is you're seeing the Foreign Audio Search scanning for forced subtitles. This additional pass adds subtitles for small bits of dialog not in your language (e.g. an alien speaking).
Anything is a guess without seeing an Activity Log, which is required for support. Also, HandBrake 1.1.2 is the currently supported release version, so please update.